Siemens SIMATIC S7-1500 Function Manual page 40

Procedure for configuring isochronous mode for a cam controller using a Timer technology module
For isochronous operation of a cam controller on a CPU, you configure a TM Timer
technology module as an isochronous technology module. So that the CPU can control an
output cam of the axis isochronously, you assign an output cam to the TM Timer technology
module.
Follow these configuration steps:
1. Switch to the device view of the CPU.
2. Select technology module TM Timer DIDQ 16 x 24V from the hardware catalog. Place the
technology module in a slot to the right of the CPU.
3. The channel configuration "0 inputs, 16 outputs" and operating mode "Timer DQ" are
preset in the properties of the technology module for the individual outputs.
4. In the properties of the technology module, "I/O addresses", select the "Isochronous
mode" option.
5. Set the same send clock for central and distributed I/O. You can find more information in
the section Configuring joint isochronous operation of central and distributed I/O
(Page 30).
6. In the project tree for the positioning axis, add a new output cam under "Output cams".
Figure 5-11
Isochronous mode
Function Manual, 10/2018, A5E43884988-AA
5.5 Configuring isochronous mode for a Motion Control application
Assigning the output cam to the positioning axis
Configuring isochronous mode
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